text: /*
   * Copyright (C) 2010 Apple Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   * THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "config.h"
  #include "BinarySemaphore.h"
  
  namespace CoreIPC {
  
  #if !PLATFORM(WIN)
  
  BinarySemaphore::BinarySemaphore()
      : m_isSet(false)
  {
  }
      
  BinarySemaphore::~BinarySemaphore()
  {
  }
  
  void BinarySemaphore::signal()
  {
      MutexLocker locker(m_mutex);
  
      m_isSet = true;
      m_condition.signal();
  }
  
  bool BinarySemaphore::wait(double absoluteTime)
  {
      MutexLocker locker(m_mutex);
  
      bool timedOut = false;
      while (!m_isSet) {
          timedOut = !m_condition.timedWait(m_mutex, absoluteTime);
          if (timedOut)
              return false;
      }
  
      // Reset the semaphore.
      m_isSet = false;
      return true;
  }
  
  #endif // !PLATFORM(WIN)
  
  } // namespace CoreIPC
  